Can't Get Soft Body Sim to Work
See this answer. Looks like a similar thing is happening to your mesh. If you check the dimensions in the properties panel you'll see the values go crazy once the can disappears.

Removing the softbody modifier and re-adding a fresh one stops the disappearing act, and it doesn't look like you have any overlapping geometry. I think it's something in your softbody settings, in the Soft Body Edges section. It looks like you've tweaked that quite a bit; perhaps you've pushed it to its limits.